Raman spectra and room-temperature ferromagnetism of hydrogenated Zn0.95Mn0.05O nanopowders

被引：8
作者：
Wang, Zhenhua [1 ]
Geng, Dianyu
Hu, Weijin
Zhang, Zhidong
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 12期
关键词：
MN-DOPED ZNO; MAGNETIC SEMICONDUCTORS; THIN-FILMS; SCATTERING; BULK;
D O I：
10.1063/1.3147867
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Two additional vibration modes at 250 and 529 cm(-1) were observed in hydrogenated Zn0.98Mn0.05O nanopowders. The number of oxygen vacancies was increased by hydrogenation, which induced the mode at 250 cm(-1). The additional vibration mode at 529 cm(-1) was due to the increase of the number of subsititutional Mn atoms occupying Zn sites, which resulted that some new lattice defects were introduced or intrinsic host-lattice defects became activated/intensified. The room-temperature ferromagnetism was observed in the hydrogenated Zn0.98Mn0.05O nanopowders prepared at high temperature (T=700 degrees C), which originated from the lattice defects such as oxygen vacancies and Zn interstitials. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3147867]
引用
收藏
页数：4
相关论文
共 26 条
[1]   Effects of N2O plasma treatment on magnetic properties of (Zn, Mn)O nanorods [J].
Baik, Jeong Min ;
Kang, Tae Won ;
Lee, Jong-Lam .
NANOTECHNOLOGY, 2007, 18 (09)
[2]   Effects of hydrogen incorporation in GaMnN [J].
Baik, KH ;
Frazier, RM ;
Thaler, GT ;
Abernathy, CR ;
Pearton, SJ ;
Kelly, J ;
Rairigh, R ;
Hebard, AF ;
Tang, W ;
Stavola, M ;
Zavada, JM .
APPLIED PHYSICS LETTERS, 2003, 83 (26) :5458-5460
[3]   Raman scattering in ZnO thin films doped with Fe, Sb, Al, Ga, and Li [J].
Bundesmann, C ;
Ashkenov, N ;
Schubert, M ;
Spemann, D ;
Butz, T ;
Kaidashev, EM ;
Lorenz, M ;
Grundmann, M .
APPLIED PHYSICS LETTERS, 2003, 83 (10) :1974-1976
[4]   RESONANT RAMAN-SCATTERING IN ZNO [J].
CALLEJA, JM ;
CARDONA, M .
PHYSICAL REVIEW B, 1977, 16 (08) :3753-3761
[5]   Donor impurity band exchange in dilute ferromagnetic oxides [J].
Coey, JMD ;
Venkatesan, M ;
Fitzgerald, CB .
NATURE MATERIALS, 2005, 4 (02) :173-179
[6]   Temperature dependence of raman scattering in ZnO [J].
Cusco, Ramon ;
Alarcon-Llado, Esther ;
Ibanez, Jordi ;
Artus, Luis ;
Jimenez, Juan ;
Wang, Buguo ;
Callahan, Michael J. .
PHYSICAL REVIEW B, 2007, 75 (16)
[7]   Zener model description of ferromagnetism in zinc-blende magnetic semiconductors [J].
Dietl, T ;
Ohno, H ;
Matsukura, F ;
Cibert, J ;
Ferrand, D .
SCIENCE, 2000, 287 (5455) :1019-1022
[8]   Magnetic properties of mn-doped ZnO [J].
Fukumura, T ;
Jin, ZW ;
Kawasaki, M ;
Shono, T ;
Hasegawa, T ;
Koshihara, S ;
Koinuma, H .
APPLIED PHYSICS LETTERS, 2001, 78 (07) :958-960
[9]   DILUTED MAGNETIC SEMICONDUCTORS [J].
FURDYNA, JK .
JOURNAL OF APPLIED PHYSICS, 1988, 64 (04) :R29-R64
[10]   Resonant Raman scattering in Mn:ZnO dilute magnetic semiconductors [J].
Gleize, J. ;
Chikoidze, E. ;
Dumont, Y. ;
Rzepka, E. ;
Gorochov, O. .
SUPERLATTICES AND MICROSTRUCTURES, 2007, 42 (1-6) :242-245
123